15, Mount Merrion Avenue, Blackrock, Co. Dublin.
Retention of a single storey bedroom and conservatory extension to a protected structure in Blackrock.
D04A/0449 · Dun Laoghaire Rathdown County Council · Lodged 26 April 2004
- Reference
- D04A/0449
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 26 April 2004
Summary
AI-generatedRetention permission is sought for a single storey, 29.7 sqm bedroom and conservatory extension to the rear of 15 Mount Merrion Avenue. The property is a protected structure.
- Storey
- 1
- Floor area
- 30 m²
Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.
Official record
Development description
Retention of a single storey 29.7 sq. Meter bedroom and conservatory extension to the rear. (a protected structure).
Land-use zoning
What this land is zoned for
“A To provide residential development and improve residential amenity while protecting the existing residential amenities”
Objective set by the COUNTY DEVELOPMENT PLAN 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.
Read the zoning objectives in the development planBuilt & sold
What happened next
Beyond the decision: whether this development was built, and what property here has sold for.
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| Apt 17 Westfield, Sion Hill, Blackrock Dublin | Jul 2025 | €476,000 | 51 m |
| 11 Westfield, Sion Hill, Blackrocknot full market price | Jun 2026 | €211,218 | 65 m |
| 2 Rock Road Place, Blackrockprice excludes VAT | Oct 2025 | €1,387,665 | 98 m |
| 2 Sydney Mews, Sydney Avenue, Blackrock | Jun 2025 | €1,300,000 | 99 m |
| 31 Castledawson, Sion Hill Rock Road, Blackrock | May 2026 | €620,000 | 123 m |
| 44 Westfield, Rock Rd, Sion Hill | Jan 2025 | €730,000 | 125 m |
| 25 Castledawson, Sion Hill, Blackrock | Sept 2025 | €549,000 | 137 m |
| 43 Mount Merrion Ave, Blackrock, Dublin | Feb 2025 | €865,000 | 139 m |
Nearby properties, not this site — a guide to local values.
Sources: Building Control Management System (commencement notices) and the Residential Property Price Register, licensed under CC BY 4.0. Records are matched to this application by location and may not be exhaustive; always confirm against the official source before relying on them.
Key dates
Timeline
- Application received26 April 2004
- Decision issued15 June 2004
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- GrantedAt this site
Demolition and replacement of existing external stairs, and deck to the rear of the property, (a protected…
17, MOUNT MERRION AVENUE, BLACKROCK, CO. DUBLIN
D04A/1185Dún Laoghaire–RathdownLodged 11 Oct 2004Alterations
- GrantedAt this site
For single storey and part two storey addition to rear and alterations (A Protected Structure)
11, Mount Merrion Avenue, Blackrock, Co. Dublin
D05A/1073Dún Laoghaire–RathdownLodged 17 Aug 2005Extension
- GrantedAt this site
Revert existing bathroom on first floor back to a bedroom and form new bathroom and en-suite in large bedroom…
11 Mount Merrion Avenue, Blackrock, Co. Dublin.
D02B/0118Dún Laoghaire–RathdownLodged 8 Mar 2002Alterations
- RefusedAt this site
Single storey and part part two storey addition to rear and alterations. A Protected Structure
11, Mount Merrion Avenue, Blackrock, Co. Dublin.
D04A/1542Dún Laoghaire–RathdownLodged 22 Dec 2004Extension
- Granted30 m away
Permission is sought for works, consisting of a 6m2 metal-roofed bay window extension in the location of an…
9 Mount Merrion Avenue, Blackrock, County Dublin, A94 R7D6 a protected structure
D21A/1153Dún Laoghaire–RathdownLodged 22 Dec 2021Extension
- Granted50 m away
The development will consist of — Formation of a car port to the end of the rear garden including PV panels…
5, Mount Merrion Avenue, Blackrock, Dublin, A94W9P2 (Protected Structure)
D26A/0302/WEBDún Laoghaire–RathdownLodged 26 Mar 2026Alterations
- Granted50 m away
Single storey pavilion of approximately 20sq.m to rear garden. (Protected Structure)
5, Mount Merrion Avenue, Blackrock, Co. Dublin
D08A/1247Dún Laoghaire–RathdownLodged 14 Nov 2008Extension
- Awaiting decision60 m away
Construction of new single storey extension to the side at first floor level — Minor modifications to…
Peafield Mews, Ben Inagh Park, Blackrock, Co. Dublin, A94F7Y5
D26B/0414/WEBDún Laoghaire–RathdownLodged 17 Jul 2026Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- Part granted, part refusedExtension
A single storey bedroom extension to rear of existing house; Retention of a previously erected single storey…
17 Palmerstown Drive, Palmerstown, Dublin 20.
SD19B/0263South DublinLodged 20 Feb 2020
- Awaiting decisionRetention
Retention of a single storey extension consisting of: (1). 6.17 sq.m. Storage area, (2). 2.36 sq.m. Kitchen…
136, Glenageary Avenue, Thomastown, Glenageary, Co Dublin, A96T8F8
D26B/0336/WEBDún Laoghaire–RathdownLodged 9 Jun 2026
- GrantedRetention
Retention of single storey extension containing a bedroom and a WC to
20 Boroimhe Aspens, Swords, Co Dublin, K67 EF88
F20B/0279FingalLodged 5 Nov 2020
- GrantedRetention
Retention of first floor bedroom extension to the rear
4, Urney Grove, Killiney Road, Dun Laoghaire, Co. Dublin.
D06B/0694Dún Laoghaire–RathdownLodged 31 Jul 2006
- GrantedRetention
To: a) RETAIN single storey domestic extension to rear of dwelling house; b) RETAIN domestic extension to…
Kilconnell , Liscannor , Co. Clare
16358ClareLodged 5 May 2016
- GrantedRetention
Retention of a conservatory, kitchen and bedroom extension to existing residence
White Quarry Road , Ardbraccan , Navan Co. Meath.
2660008MeathLodged 19 Dec 2025
Community
Discussion
What local people think about this application.
Community sentiment
No votes yetNobody has voted on this application yet.
Community sentiment — a straw poll of people who visited this page, not a statutory submission. To make a valid observation you must submit it to the planning authority.
Sign in to have your say on this application.
No comments yet. Be the first to say what you think about this application.
Sign in to join the discussion on this application.
Comments are moderated and are the opinions of the people who wrote them. They form no part of the statutory planning process — to make a valid observation you must submit it to the planning authority.